Symmetry breaking

Quark

Supersymmetry

Higgs boson

Gauge (firearms)

Lepton

Technicolor

Nuclear physics

Particle physics

Archaeology

Gauge boson

Standard Model (mathematical formulation)

Leptoquark

Gauge theory

Grand Unified Theory

Physics

Higgs sector

Spontaneous symmetry breaking

Gauge group

Electron

Quantum chromodynamics

Higgs field

History

Physics Letters B

We present a model for third-family quark-lepton unification at the TeV scale featuring a composite Higgs sector. The model is based on a variant of the Pati-Salam model, the so-called 4321 model, consisting of the gauge group SU(4)×SU(3)′×SU(2)L×U(1)X. The spontaneous symmetry breaking to the SM gauge group is triggered dynamically by a QCD-like confining sector. The same strong dynamics also produces the Higgs as a pseudo Nambu-Goldstone boson, connecting the energy scales of both sectors. The model predicts a massive U1 vector leptoquark coupled dominantly to the third generation, recently put forward as a possible solution to the B-meson anomalies.

Third-family quark-lepton unification with a fundamental composite Higgs